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A blue dwarf star with an unusual spectrum, Achernar has a magnitude of +0.5, making
it the brightest of the stars of Eridanus, and the ninth brightest in the entire sky.
Bright Achernar lies at the extreme southern tip of the star-river Eridanus, less than a degree from its southernmost border with neighbouring Hydrus.
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Liesma YZ Ceti Miram Mekbuda w Carinae x Carinae s Velorum A Polis Poerava Struve 2398 A Struve 2398 B π Cephei Rukbat Rastaban Sharjah Rana θ Hydrae Nashira ο1 Cygni b Velorum Cerberus Copernicus β Reticuli BF Orionis 41 Draconis Alkaphrah Acubens a Velorum Adhafera Guniibuu GX Andromedae HD 37131 GQ Andromedae Koeia La Superba ι1 Scorpii HR 5546 HR 6682 ε Indi Erakis Ebla Dombay Felixvarela Almaaz 61 Cygni B Castor B 61 Cygni A τ Ceti Caph Aspidiske Capella Menkar Canopus BZ Crucis Rigel α Centauri A Wolf 498 Wolf 359 Meissa A π5 Orionis Mebsuta Tarazed δ Andromedae δ Caeli Lalande 18115 Dabih Major Sulafat ζ Trianguli Australis δ Circini 15 Orionis Kitalpha Deneb Algedi Polaris δ Pavonis Suhail Ran Arneb χ Cygni Zaniah Deneb Wezen α Telescopii Ross 154 Schedar U Sagittarii Sargas Alchiba ε Reticuli Tureis Gliese 536 σ Orionis HO Librae Alfirk W Virginis HH Andromedae Alnitak Alnilam η Carinae β Doradus Sham Hatysa ο Capricorni B Naos WX Ursae Majoris Azmidi ν2 Canis Majoris Achird Sirius B Betelgeuse van Maanen's Star HR 7687 Mira Proxima Centauri EE Leonis V626 Arae Mirfak Unurgunite UV Ceti Sirius Atria Avior Enif Teegarden's Star Antares Sadr Saiph ρ Cygni
Achernar
Hertzprung-Russell diagram plotting the temperature and luminosity of Achernar (marked by the red circle) relative to other stars.
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